No Org Package in Package manager at http://orgmode.org/worg/org-faq.html#installing-via-elpawork around "In the meanwhile, you can manually download the tarball and install it. Refer this FAQ entry for further information." doesn't work either, I get
"Can't read whole file"
GNU Emacs 23.3.1 (powerpc-apple-darwin, NS apple-appkit-1038.35) of 2011-03-10 on black.porkrind.org